34 Chapter 2
Front and Rear Panel Features
Rear-Panel Features
8 IF, Video, and Sweep Ports (Option A4J or Option AYX): (Refer to the
specifications guide for more information.)
SWP OUT provides a voltage ramp corresponding to the sweep of the analyzer (0
V to 10 V).
HI SWP IN (TTL) can be grounded to stop and reset the sweep. Once the sweep has
been stopped, removing the ground will trigger the start of a new sweep.
HI SWP OUT (TTL) is high when the analyzer is sweeping.
AUX VIDEO OUT provides detected video output (before the analog-to-digital
conversion) proportional to vertical deflection of the trace. Output is from 0 V to
1 V. Amplitude-correction factors are not applied to this signal.
AUX IF OUT is a 50 Ω, 21.4 MHz IF output that is the down-converted signal of
the RF input of the analyzer. Amplitude-correction factors are not applied to this
signal. This output is taken after the resolution bandwidth filters and step gains and
before the log amplifier.
NOTE Only one IF and Sweep Port option (Option A4J or Option AYX) can be installed at a
time.
9 Quasi Peak Detector allows quasi-peak and average measurements, as well as
demodulating signals of interest. The 9-pin serial port is reserved for future use.
10 Frequency Extension Assembly controls the microwave front-end components in the
Agilent E7403A, E7404A, and E7405A.
11 Card Slot Identification Numbers. Refer to Table 2-8. for card slot versus option
card compatibility information.
12 10 MHz REF IN accepts an external frequency source to provide the 10 MHz, −15 to
+10 dBm as a timebase.
NOTE It is not necessary to connect the 10 MHz REF OUT to the 10 MHz REF IN on the rear
panel of the analyzer. Doing so will result in a Frequency Reference Error message.
13 10 MHz REF OUT provides a 10 MHz, 0 dBm minimum, timebase reference signal.
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